JP5345219B2 - Hinge mechanism - Google Patents

Hinge mechanism Download PDF

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Publication number
JP5345219B2
JP5345219B2 JP2011528523A JP2011528523A JP5345219B2 JP 5345219 B2 JP5345219 B2 JP 5345219B2 JP 2011528523 A JP2011528523 A JP 2011528523A JP 2011528523 A JP2011528523 A JP 2011528523A JP 5345219 B2 JP5345219 B2 JP 5345219B2
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base
click
monitor
hinge mechanism
convex portion
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JPWO2011024233A1 (en
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哲郎 永見
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R11/0229—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for displays, e.g. cathodic tubes
    • B60R11/0235—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for displays, e.g. cathodic tubes of flat type, e.g. LCD
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D11/00—Additional features or accessories of hinges
    • E05D11/10—Devices for preventing movement between relatively-movable hinge parts
    • E05D11/1028—Devices for preventing movement between relatively-movable hinge parts for maintaining the hinge in two or more positions, e.g. intermediate or fully open
    • E05D11/105—Devices for preventing movement between relatively-movable hinge parts for maintaining the hinge in two or more positions, e.g. intermediate or fully open the maintaining means acting perpendicularly to the pivot axis
    • E05D11/1057—Devices for preventing movement between relatively-movable hinge parts for maintaining the hinge in two or more positions, e.g. intermediate or fully open the maintaining means acting perpendicularly to the pivot axis specially adapted for vehicles
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D7/00—Hinges or pivots of special construction
    • E05D7/08—Hinges or pivots of special construction for use in suspensions comprising two spigots placed at opposite edges of the wing, especially at the top and the bottom, e.g. trunnions
    • E05D7/081—Hinges or pivots of special construction for use in suspensions comprising two spigots placed at opposite edges of the wing, especially at the top and the bottom, e.g. trunnions the pivot axis of the wing being situated near one edge of the wing, especially at the top and bottom, e.g. trunnions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0001—Arrangements for holding or mounting articles, not otherwise provided for characterised by position
    • B60R2011/0003—Arrangements for holding or mounting articles, not otherwise provided for characterised by position inside the vehicle
    • B60R2011/0028—Ceiling, e.g. roof rails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0042—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means
    • B60R2011/008—Adjustable or movable supports
    • B60R2011/0085—Adjustable or movable supports with adjustment by rotation in their operational position
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Type of wing
    • E05Y2900/538—Interior lids

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

A hinge mechanism 1 includes a rotation shaft 3 connected to a monitor and serving as rotating central axis X; a base 2 pivotally supporting the shaft 3 rotatably, and having click recesses 2b1, 2b2 and a housing position determining recess 2c on a circumference centering the axis X; a plate 5 attached at the end of the shaft 3; and a leaf spring 4 located between the base 2 and plate 5, fit-in by the rotation shaft 3, and having a click projection 4b that fits in the click recesses 2b1, 2b2 and recess 2c to hold the monitor in a predetermined rotation angle position. A sliding friction projection 4c sliding with pressed into contact with the base 2 is formed on the side opposite from the click projection 4b across the axis X, while a cutaway 2e entered by the projection 4c is formed in the base 2.

Description

この発明は、モニタ等の開閉動作を行うヒンジ機構に関するものである。   The present invention relates to a hinge mechanism that opens and closes a monitor or the like.

車載用のモニタ装置に用いられる従来のヒンジ機構を、図６及び図７を用いて説明する。図６は従来のクリック作用を有するヒンジ機構２１の構成を示す斜視図であり、図７にその分解斜視図を示す。ヒンジ機構２１は、モニタ１３に連結されて回転中心軸Ｘを中心に回転する回転シャフト３に、バネ部材６、ベース２、板バネ４及びプレート５を嵌め込み、かしめて構成される。   A conventional hinge mechanism used in an in-vehicle monitor device will be described with reference to FIGS. FIG. 6 is a perspective view showing a configuration of a conventional hinge mechanism 21 having a click action, and FIG. 7 is an exploded perspective view thereof. The hinge mechanism 21 is configured by fitting the spring member 6, the base 2, the leaf spring 4, and the plate 5 onto the rotating shaft 3 that is connected to the monitor 13 and rotates about the rotation center axis X.

回転シャフト３には、ベース２の回転軸穴２ａの穴径よりも大径のフランジ３ａと、回転軸穴２ａの穴径よりも小径かつ一対のフラット面が左右対称に形成されたＤカット部３ｂとが設けられている。他方、ベース２には、回転シャフト３のＤカット部３ｂを回転自在に挿通するための回転軸穴２ａが形成されている。また、板バネ４、プレート５及びバネ部材６には、回転シャフト３のＤカット部３ｂに嵌合する挿入穴４ａ，５ａ，６ａがそれぞれ設けられている。これら挿入穴４ａ，５ａ，６ａは、Ｄカット部３ｂの断面よりもはめあい程度大きい面積の穴となっている。   The rotating shaft 3 has a flange 3a having a diameter larger than the diameter of the rotating shaft hole 2a of the base 2 and a D-cut portion in which a pair of flat surfaces smaller than the diameter of the rotating shaft hole 2a are symmetrically formed. 3b. On the other hand, the base 2 is formed with a rotation shaft hole 2a for rotatably inserting the D-cut portion 3b of the rotation shaft 3. Further, the plate spring 4, the plate 5, and the spring member 6 are provided with insertion holes 4 a, 5 a, 6 a that fit into the D-cut portion 3 b of the rotary shaft 3, respectively. These insertion holes 4a, 5a, and 6a are holes having a larger area than the cross section of the D-cut portion 3b.

また、ベース２には、回転中心軸Ｘを中心とする円周上に、複数のクリック用凹部２ｂ１，２ｂ２が所定の間隔をあけて凹設されると共に、モニタ１３をモニタ装置本体に収納する角度位置に収納位置決め用凹部２ｃが凹設されている。この収納位置決め用凹部２ｃからクリック用凹部２ｂ１方向に向かって、収納位置決め用凹部２ｃの深さを徐々に浅くしたテーパ面２ｄが形成されている。他方、板バネ４には、ベース２のクリック用凹部２ｂ１，２ｂ２及び収納位置決め用凹部２ｃに嵌まり込んでクリック作用を生じさせるためのクリック用凸部４ｂが設けられている。   The base 2 is provided with a plurality of click recesses 2b1 and 2b2 at predetermined intervals on a circumference centered on the rotation center axis X, and the monitor 13 is housed in the monitor device body. A storage positioning recess 2c is provided at an angular position. A taper surface 2d is formed by gradually decreasing the depth of the storage positioning recess 2c from the storage positioning recess 2c toward the click recess 2b1. On the other hand, the leaf spring 4 is provided with a click protrusion 4b that is fitted into the click recesses 2b1, 2b2 and the storage positioning recess 2c of the base 2 to cause a click action.

図８Ａ〜図８Ｃは、図６及び図７に示すヒンジ機構２１を備えた天吊りモニタ装置１１の開閉動作を示す図である。図８Ａはモニタ１３がモニタ収納ケース１２に収納されている状態を示す斜視図、図８Ｂはその概略断面図である。図８Ｃはモニタ１３を開いた状態の斜視図である。天吊りモニタ装置１１は、車両の天井面に設けられた本体装置側のモニタ収納ケース１２と、このモニタ収納ケース１２に対し開閉して出し入れ可能なモニタ１３とからなっている。モニタ１３の一方の面にはモニタ画面１３ａが設けられている。また、モニタ１３はボタン１４に連動するロック１５によって掛止されて、モニタ収納ケース１２内に保持されている。このとき、ヒンジ機構２１は、板バネ４のクリック用凸部４ｂがベース２の収納位置決め用凹部２ｃに嵌まり込んだ状態になっている。モニタ装置本体側に取り付けられるベース２に対して、回転シャフト３が板バネ４、プレート５及びバネ部材６と一体に回転中心軸Ｘを中心に回転することにより、回転シャフト３に連結されたモニタ１３も回転中心軸Ｘを中心に回転（開閉）する。   8A to 8C are diagrams illustrating the opening / closing operation of the ceiling monitor device 11 including the hinge mechanism 21 illustrated in FIGS. 6 and 7. FIG. 8A is a perspective view showing a state where the monitor 13 is housed in the monitor housing case 12, and FIG. 8B is a schematic sectional view thereof. FIG. 8C is a perspective view showing a state in which the monitor 13 is opened. The ceiling monitor device 11 includes a monitor storage case 12 on the main body side provided on the ceiling surface of the vehicle, and a monitor 13 that can be opened and closed with respect to the monitor storage case 12. A monitor screen 13 a is provided on one surface of the monitor 13. Further, the monitor 13 is hooked by a lock 15 interlocked with the button 14 and held in the monitor storage case 12. At this time, the hinge mechanism 21 is in a state in which the click convex portion 4 b of the leaf spring 4 is fitted into the storage positioning concave portion 2 c of the base 2. A monitor connected to the rotating shaft 3 by rotating the rotating shaft 3 around the rotation center axis X integrally with the leaf spring 4, the plate 5 and the spring member 6 with respect to the base 2 attached to the monitor apparatus main body side. 13 also rotates (opens and closes) about the rotation center axis X.

モニタ収納ケース１２に設けられたボタン１４が押されると、図８Ｂに一点鎖線で示すようにモニタ１３を保持しているロック１５が外れ、モニタ１３は自重により自重落下位置の角度まで（図８Ｂに一点鎖線で描くモニタ１３の位置まで）、回転中心軸Ｘを中心に回転する。このとき、ヒンジ機構２１は、板バネ４のクリック用凸部４ｂがベース２の収納位置決め用凹部２ｃから抜け出し、モニタ１３の自重によりテーパ面２ｄ上を摺動する。その後、ユーザが手動によりモニタ１３を図８Ｃに示す視聴位置まで開かせて、映像を楽しむ。このとき、ヒンジ機構２１は、クリック用凸部４ｂがクリック用凹部２ｂ１又はクリック用凹部２ｂ２に嵌まり込んでモニタ１３を視聴位置の角度で保持する。   When the button 14 provided on the monitor storage case 12 is pressed, the lock 15 holding the monitor 13 is released as shown by a one-dot chain line in FIG. 8B, and the monitor 13 is moved to its own weight fall position angle by its own weight (FIG. 8B). To the position of the monitor 13 drawn with a dot-and-dash line). At this time, in the hinge mechanism 21, the click protrusion 4 b of the leaf spring 4 comes out of the storage positioning recess 2 c of the base 2, and slides on the tapered surface 2 d by the weight of the monitor 13. Thereafter, the user manually opens the monitor 13 to the viewing position shown in FIG. At this time, the hinge mechanism 21 holds the monitor 13 at the viewing position angle by the click convex portion 4b being fitted into the click concave portion 2b1 or the click concave portion 2b2.

また、特許文献１に記載の回動取付機構も、上記ヒンジ機構２１と同様にクリック作用を有する構成であり、挿通孔が設けられたベース部材と、ベース部材の挿通孔に挿通されて軸心を中心に回動可能に軸着された回動シャフトと、ベース部材の一面と対向する面にクリック機能用の凹部が形成されたクリックプレートと、回動シャフトの軸心に平行な方向に弾性を有し、クリックプレートの凹部に嵌まるクリック機能用の凸部が形成され、ベース部材に対して回動不能に固定されると共に、ベース部材、回動シャフト及びクリックプレートが回動シャフトの軸心と平行な方向に圧接するよう、ベース部材とクリックプレートとの間に弾装されたクリックバネとを具備する。従って、ベース部材に対して回動シャフトを回動させると、クリック機能用の凸部が凹部に嵌まり、抜け出ることでクリック作用が発生する。   Further, the rotation mounting mechanism described in Patent Document 1 is also configured to have a click action like the hinge mechanism 21, and is inserted into the base member provided with the insertion hole and the insertion hole of the base member to be axially centered. A rotation shaft that is pivotally mounted about the center, a click plate having a depression for a click function on a surface facing one surface of the base member, and an elasticity in a direction parallel to the axis of the rotation shaft A click function convex portion that fits in the concave portion of the click plate is fixed to the base member so as not to rotate, and the base member, the rotating shaft, and the click plate are connected to the axis of the rotating shaft. A click spring elastically mounted between the base member and the click plate is provided so as to be pressed in a direction parallel to the center. Therefore, when the rotation shaft is rotated with respect to the base member, the click function convex portion is fitted into the concave portion, and the click action is generated by coming out.

さらに、特許文献２に記載のヒンジ装置は、バネ部材により、複数の摩擦部材を回動部材に圧接させ、回動部材が回動した時に回動部材と摩擦部材との間に摩擦が生じて、所定の回転トルク以上でないと回動できない構成としている。この構成の場合には、回動部材に連結した回転体のどの角度においても同一の所定の回転トルク以上でないと回動できないトルク（以下、保持トルク）となり、任意の角度位置で回転体を保持することができる。   Further, in the hinge device described in Patent Document 2, a plurality of friction members are pressed against the rotating member by the spring member, and friction is generated between the rotating member and the friction member when the rotating member rotates. The rotation is not possible unless the torque is not less than a predetermined value. In the case of this configuration, the rotating body connected to the rotating member has a torque (hereinafter referred to as holding torque) that cannot be rotated unless it is equal to or greater than the same predetermined rotational torque, and the rotating body is held at an arbitrary angular position. can do.

特開２０００−５５０３１号公報JP 2000-55031 A 特開２００１−１２４５１号公報JP 2001-12451 A

図６及び図７に示すような１つのクリック用凸部を設け、バネ部材６を無くしたヒンジ機構では、ベースの回転軸穴と回転シャフトとの嵌合ガタにより回転シャフトが振れるという課題があった。この課題の詳細を説明するために、図９に、図６及び図７に示すヒンジ機構２１の正面図を示す。なお、図９では説明を簡便にするためにプレート５の図示を省略すると共に、Ｄカット部３ｂを円柱形状で表す。クリック用凹部２ｂ２にクリック用凸部４ｂが嵌まり込んでモニタ１３が視聴位置の角度で保持されている状態において、ベース２の回転軸穴２ａと回転シャフト３との間に嵌合ガタがあるため、板バネ４のクリック用凸部４ｂを支点として回転シャフト３が回転軸穴２ａの嵌合ガタ分振れることになる。この結果、モニタ１３も振れてしまう。   The hinge mechanism provided with one click protrusion as shown in FIG. 6 and FIG. 7 and without the spring member 6 has a problem that the rotation shaft swings due to the backlash of the rotation shaft hole of the base and the rotation shaft. It was. In order to explain the details of this problem, FIG. 9 shows a front view of the hinge mechanism 21 shown in FIGS. In FIG. 9, the illustration of the plate 5 is omitted for simplicity of explanation, and the D-cut portion 3 b is represented by a cylindrical shape. In the state where the click convex portion 4b is fitted in the click concave portion 2b2 and the monitor 13 is held at the viewing position angle, there is a fitting play between the rotary shaft hole 2a of the base 2 and the rotary shaft 3. Therefore, the rotary shaft 3 swings by the amount of looseness of the rotary shaft hole 2a with the click convex portion 4b of the leaf spring 4 as a fulcrum. As a result, the monitor 13 is also shaken.

そのため、従来のヒンジ機構２１では回転シャフト３のフランジ３ａとベース２との間に付勢力によって発生する摩擦力により保持トルクを発生させるためのバネ部材６を設ける必要があったが、ヒンジ機構２１の組立時には、回転シャフト３のＤカット部３ｂにプレート５と板バネ４とを取付け、バネ部材６を撓ませながらかしめなければならず、ヒンジ機構２１の組立性も悪いものになっていた。   Therefore, in the conventional hinge mechanism 21, it is necessary to provide the spring member 6 for generating the holding torque by the frictional force generated by the biasing force between the flange 3 a of the rotating shaft 3 and the base 2. At the time of assembly, the plate 5 and the leaf spring 4 must be attached to the D-cut portion 3b of the rotary shaft 3, and the spring member 6 must be bent while being bent, and the assemblability of the hinge mechanism 21 is also poor.

また、特許文献１に記載された回動取付機構の場合、クリック作用の硬さはクリックバネ（弾性部材）の弾性力で決定されるが、クリック機能用の凸部が凹部に嵌まっている状態ではクリックバネのバネ力が解放され、弾性力が最も弱い状態となる。そのため、凸部と凹部が嵌まってクリック機能が働く所定位置保持状態では、振動等の小さな振幅外力が加わると、クリックバネの撓み範囲内で凸部が動く。従って、従来のヒンジ機構を車載用モニタ等の開閉機構に用いた場合、凸部が動くことによって画面が振れ、見づらいといった課題があった。   In the case of the rotation mounting mechanism described in Patent Document 1, the hardness of the click action is determined by the elastic force of the click spring (elastic member), but the convex portion for the click function is fitted in the concave portion. In this state, the spring force of the click spring is released and the elastic force is the weakest. Therefore, in a predetermined position holding state where the convex portion and the concave portion are fitted and the click function works, when a small amplitude external force such as vibration is applied, the convex portion moves within the deflection range of the click spring. Therefore, when the conventional hinge mechanism is used for an opening / closing mechanism such as an in-vehicle monitor, there is a problem that the screen shakes due to the movement of the convex portion and is difficult to see.

さらに、特許文献２に記載されたヒンジ装置を、図８に示すような天吊りモニタ装置１１の開閉機構に用いた場合、このヒンジ装置がどの角度においても同一の保持トルクとなる構成のため、モニタを視聴位置の角度で保持し、かつ、振動の振れを抑えるために高い保持トルクを得ようとすると、モニタ収納位置でロック解除したときにモニタが自重落下できないことがある。また、このヒンジ装置は部品点数が多く軸方向に大きなヒンジとなるばかりでなく、摩擦部材（バネワッシャ等）の板厚又はバネ素材のバネ特性のばらつきが生じた場合に保持トルクの特性が異なるヒンジとなり、安定したトルク性能を得られないことがある。また、上述のヒンジ機構２１と同様に、摩擦部材を回動部材に圧接するためのバネ部材を撓ませながら、軸部の端面と抑え部材とをかしめなければならず、ヒンジ装置の組立性が悪かった。   Further, when the hinge device described in Patent Document 2 is used for the opening / closing mechanism of the ceiling monitor device 11 as shown in FIG. 8, the hinge device has the same holding torque at any angle. If the monitor is held at the viewing position angle and an attempt is made to obtain a high holding torque in order to suppress vibration fluctuation, the monitor may not fall by its own weight when unlocked at the monitor storage position. This hinge device not only has a large number of parts but becomes a large hinge in the axial direction, and has different holding torque characteristics when the thickness of the friction member (spring washer, etc.) or the spring characteristics of the spring material varies. Therefore, stable torque performance may not be obtained. Similarly to the hinge mechanism 21 described above, the end surface of the shaft portion and the restraining member must be caulked while bending the spring member for pressing the friction member against the rotating member. It was bad.

この発明は、上記のような課題を解決するためになされたもので、摩擦用部材及び弾性部材を用いずに振動時における回転部材の振れを防止することを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to prevent the rotation of the rotating member during vibration without using a friction member and an elastic member.

この発明のヒンジ機構は、回転体に連結され、回転軸となるシャフトと、シャフトを回転自在に軸支すると共に、回転軸を中心とした円周上にクリック用凹凸部の一方を有するベースと、シャフトの端部に取り付けて一体で回転するプレートと、ベースとプレートとの間に位置してシャフトに嵌合して一体で回転し、ベースに設けられたクリック用凹凸部の一方に係合して回転体を所定の回転角度位置に保持するクリック用凹凸部の他方を有する板バネとを備え、板バネは、クリック用凹凸部の他方とは回転軸を介して反対側に、クリック用凹凸部の他方と連動してベースに圧接して摺動する摺動摩擦用凸部を有するようにしたものである。 The hinge mechanism of the present invention includes a shaft that is connected to a rotating body and serves as a rotating shaft, a base that rotatably supports the shaft, and a base that has one of the click uneven portions on the circumference around the rotating shaft, , A plate that is attached to the end of the shaft and rotates integrally with it, and is positioned between the base and the plate so as to fit into the shaft and rotate integrally, and engages with one of the click irregularities provided on the base And a leaf spring having the other of the click concavo-convex portion for holding the rotating body at a predetermined rotation angle position, and the leaf spring is on the opposite side to the other of the click concavo-convex portion via the rotation shaft . A sliding friction convex portion that slides in pressure contact with the base in conjunction with the other of the concave and convex portions is provided.

この発明によれば、板バネが、クリック用凹凸部の他方とは回転軸を介して反対側に、クリック用凹凸部の他方と連動してベースに圧接して摺動する摺動摩擦用凸部を有することにより、振動時におけるシャフトの振れを防止することができる。 According to the present invention, the sliding friction convex portion in which the leaf spring slides in pressure contact with the base in conjunction with the other of the click uneven portion on the opposite side to the other of the click uneven portion via the rotation shaft. By having this, it is possible to prevent the shaft from shaking during vibration.

この発明の実施の形態１に係るヒンジ機構の構成を示す斜視図である。It is a perspective view which shows the structure of the hinge mechanism which concerns on Embodiment 1 of this invention. 図１に示すヒンジ機構の分解斜視図である。It is a disassembled perspective view of the hinge mechanism shown in FIG. 実施の形態１に係るヒンジ機構のベースと板バネの位置関係を表し、図３（ａ）はモニタを収納位置に保持した状態、図３（ｂ）はモニタ１３を自重落下位置に保持した状態、図３（ｃ）はモニタ１３を視聴位置に保持した状態である。FIG. 3A shows a positional relationship between the base of the hinge mechanism and the leaf spring according to the first embodiment, FIG. 3A shows a state in which the monitor is held in the storage position, and FIG. 3B shows a state in which the monitor 13 is held in its own weight falling position. FIG. 3C shows a state where the monitor 13 is held at the viewing position. 実施の形態１に係るヒンジ機構のベースと板バネの位置関係を表し、図４（ａ）は図３（ａ）のＡＡ線に沿って切断した断面図、図４（ｂ）は図３（ｂ）のＢＢ線に沿って切断した断面図、図４（ｃ）は図３（ｃ）のＣＣ線に沿って切断した断面図である。FIG. 4A shows a positional relationship between the base of the hinge mechanism and the leaf spring according to the first embodiment, FIG. 4A is a cross-sectional view taken along the line AA in FIG. 3A, and FIG. FIG. 4C is a cross-sectional view taken along line BB in FIG. 3B, and FIG. 4C is a cross-sectional view taken along line CC in FIG. 実施の形態１のその他の構成のヒンジ機構を図３（ａ）のＡＡ線に相当する位置で切断した断面図を示し、図５（ａ）は半抜きで形成した切り欠き部、図５（ｂ）は絞りで形成した切り欠き部を示す。Sectional drawing which cut | disconnected the hinge mechanism of the other structure of Embodiment 1 in the position corresponded to the AA line of Fig.3 (a) is shown, Fig.5 (a) is a notch part formed by half punching, FIG. b) shows a notch formed by a diaphragm. 従来のヒンジ機構の構成を示す斜視図である。It is a perspective view which shows the structure of the conventional hinge mechanism. 図６に示すヒンジ機構の分解斜視図である。FIG. 7 is an exploded perspective view of the hinge mechanism shown in FIG. 6. ヒンジ機構によるモニタの動作を示し、モニタを閉じた状態の斜視図である。It is a perspective view of the state where the operation of the monitor by the hinge mechanism is shown and the monitor is closed. 図８Ａに示す状態の概略断面図である。It is a schematic sectional drawing of the state shown to FIG. 8A. ヒンジ機構によるモニタの動作を示し、モニタを視聴位置まで開いた状態の斜視図である。It is a perspective view of the state which opened the monitor to the viewing-and-listening position, showing operation of the monitor by a hinge mechanism. 図６及び図７に示すヒンジ機構の構成を示す正面図である。It is a front view which shows the structure of the hinge mechanism shown in FIG.6 and FIG.7.

以下、この発明をより詳細に説明するために、この発明を実施するための形態について、添付の図面に従って説明する。
実施の形態１．
この発明の実施の形態１では、ヒンジ機構を、図８Ａ〜図８Ｃに示すような天吊りモニタ装置１１に用いる場合を例に説明する。図１は、この発明の実施の形態１に係るヒンジ機構１の構成を示す斜視図であり、図２はその分解斜視図である。なお、以下の実施の形態の説明において、先立って説明した従来技術（図６〜図９）の構成要素と同一又は相当するものには同一の符号を付し、説明を省略する。Hereinafter, in order to explain the present invention in more detail, modes for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1 FIG.
In Embodiment 1 of the present invention, a case where the hinge mechanism is used for a ceiling monitor apparatus 11 as shown in FIGS. 8A to 8C will be described as an example. 1 is a perspective view showing the configuration of a hinge mechanism 1 according to Embodiment 1 of the present invention, and FIG. 2 is an exploded perspective view thereof. In the following description of the embodiments, the same or equivalent components as those of the prior art (FIGS. 6 to 9) described above are denoted by the same reference numerals and description thereof is omitted.

ベース２には、新たに、回転中心軸Ｘを挟んで収納位置決め用凹部２ｃと対向する縁を切り欠いた切り欠き部２ｅが設けられ、この切り欠き部２ｅのエッジの一部にテーパ２ｆが設けられている。   The base 2 is newly provided with a notch 2e having a notch that is opposed to the storage positioning recess 2c across the rotation center axis X, and a taper 2f is formed on a part of the edge of the notch 2e. Is provided.

回転シャフト３には、新たに、回転軸穴２ａの穴径よりもはめあい程度小さい軸径かつベース２の板厚より若干長い高さの円筒部３ｃが形成されている。Ｄカット部３ｂは、この円筒部３ｃ上に設けている。なお、このＤカット部３ｂは円筒部３ｃより小さい軸径で、さらにフラット面が対面方向に形成されている。   The rotating shaft 3 is newly formed with a cylindrical portion 3c having a shaft diameter smaller than the diameter of the rotating shaft hole 2a and slightly higher than the plate thickness of the base 2. The D cut portion 3b is provided on the cylindrical portion 3c. The D-cut portion 3b has a smaller shaft diameter than the cylindrical portion 3c, and a flat surface is formed in the facing direction.

板バネ４には、新たに、回転中心軸Ｘを挟んでクリック用凸部４ｂと対向する縁に摺動摩擦用凸部４ｃが設けられている。図３（ａ）及び図４（ａ）に示すように、この摺動摩擦用凸部４ｃは、クリック用凸部４ｂがベース２の収納位置決め用凹部２ｃに嵌まり込んでいるときには切り欠き部２ｅの位置にあるので保持トルクを生じさせず、一方、回転シャフト３が回転すると図３（ｂ）及び図４（ｂ）から図３（ｃ）及び図４（ｃ）に示すように、ベース２の表面を押圧しながら摺動して保持トルクを生じさせる。 The leaf spring 4 is newly provided with a sliding friction convex portion 4c on the edge facing the click convex portion 4b across the rotation center axis X. As shown in FIGS. 3 (a) and 4 (a), the sliding friction convex portion 4c has a notch portion 2e when the click convex portion 4b is fitted in the storage positioning concave portion 2c of the base 2. When the rotary shaft 3 rotates, as shown in FIGS. 3 (b) and 4 (b) to 3 (c) and 4 (c), the base 2 is not generated. A sliding torque is generated by sliding while pressing the surface.

プレート５には、新たに、板バネ４の摺動摩擦用凸部４ｃに相当する位置に、絞り凹部５ｂが絞り加工により設けられている。このプレート５は、板バネ４が撓んだときの応力をその全面で受けることにより、挿入穴４ａ周辺に応力が集中してかしめが緩むことを防止する。また、プレート５には、板バネ４の摺動摩擦用凸部４ｃが撓んだときにプレート５と当接するのを避けるための絞り凹部５ｂが設けられている。   The plate 5 is newly provided with a drawing recess 5b by drawing at a position corresponding to the sliding friction projection 4c of the plate spring 4. The plate 5 receives stress when the plate spring 4 is bent over its entire surface, thereby preventing stress from concentrating around the insertion hole 4a and loosening the caulking. Further, the plate 5 is provided with an aperture recess 5b for avoiding contact with the plate 5 when the sliding friction convex portion 4c of the leaf spring 4 is bent.

ヒンジ機構１を組み立てる際、回転シャフト３の円筒部３ｃにベース２の回転軸穴２ａを嵌合させ、続いて回転シャフト３のＤカット部３ｂに板バネ４の挿入穴４ａとプレート５の挿入穴５ａをフラット面が一致するように嵌合させて、Ｄカット部３ｂの端面とプレート５とをかしめる。このとき、板バネ４の摺動摩擦用凸部４ｃがベース２の切り欠き部２ｅの位置に重なるように位置合わせをすれば、摺動摩擦用凸部４ｃを撓ますことなく組み立てが可能となり、組立性が向上する。   When assembling the hinge mechanism 1, the rotating shaft hole 2 a of the base 2 is fitted into the cylindrical portion 3 c of the rotating shaft 3, and then the insertion hole 4 a of the leaf spring 4 and the plate 5 are inserted into the D-cut portion 3 b of the rotating shaft 3. The holes 5a are fitted so that the flat surfaces coincide with each other, and the end surface of the D-cut portion 3b and the plate 5 are caulked. At this time, if the sliding friction convex portion 4c of the leaf spring 4 is aligned so as to overlap the position of the notch portion 2e of the base 2, the sliding friction convex portion 4c can be assembled without being bent. Improves.

図３及び図４はベース２と板バネ４の位置関係を表し、図３（ａ）はモニタ（回転体）１３を収納位置に保持した状態、図３（ｂ）はモニタ１３を自重落下位置に保持した状態、図３（ｃ）はモニタ１３を視聴位置に保持した状態、図４（ａ）は図３（ａ）のＡＡ線に沿って切断した断面図、図４（ｂ）は図３（ｂ）のＢＢ線に沿って切断した断面図、図４（ｃ）は図３（ｃ）のＣＣ線に沿って切断した切断図である。なお、図３ではプレート５を省略し、図４ではモニタ１３を省略する。   3 and 4 show the positional relationship between the base 2 and the leaf spring 4. FIG. 3A shows a state in which the monitor (rotary body) 13 is held in the storage position, and FIG. 3 (c) is a state in which the monitor 13 is held at the viewing position, FIG. 4 (a) is a cross-sectional view taken along line AA in FIG. 3 (a), and FIG. 4 (b) is a diagram. FIG. 4C is a sectional view taken along line BB in FIG. 3B, and FIG. 4C is a sectional view taken along line CC in FIG. In FIG. 3, the plate 5 is omitted, and the monitor 13 is omitted in FIG.

図３（ａ）及び図４（ａ）に示すように、板バネ４のクリック用凸部４ｂがベース２の収納位置決め用凹部２ｃに嵌まり込んでいるとき、クリック用凸部４ｂ側に保持トルクは発生せず、かつ、反対側の摺動摩擦用凸部４ｃも切り欠き部２ｅに入っているので保持トルクは発生しない。以上のヒンジ機構１の状態は、天吊りモニタ装置１１では図８Ａ及び図８Ｂに実線で示す状態であり、モニタ１３はロック１５によってモニタ収納ケース１２内の収納位置に保持されている。
ユーザによってボタン１４が押されてロック１５が解除されると、ヒンジ機構１には保持トルクが発生していないので、モニタ１３の自重により回転シャフト３が回動してクリック用凸部４ｂが収納位置決め用凹部２ｃ内を移動し、摺動摩擦用凸部４ｃは切り欠き部２ｅ内を移動する。その後、クリック用凸部４ｂがテーパ面２ｄを摺動し、摩擦により発生した保持トルクによりモニタ１３の回転速度が減速しはじめる。As shown in FIGS. 3A and 4A, when the click convex portion 4b of the leaf spring 4 is fitted in the storage positioning concave portion 2c of the base 2, it is held on the click convex portion 4b side. No torque is generated, and no holding torque is generated because the sliding friction convex portion 4c on the opposite side is also in the cutout portion 2e. The state of the hinge mechanism 1 described above is the state shown by the solid lines in FIGS. 8A and 8B in the ceiling monitor device 11, and the monitor 13 is held in the storage position in the monitor storage case 12 by the lock 15.
When the user presses the button 14 to release the lock 15, no holding torque is generated in the hinge mechanism 1, so the rotating shaft 3 is rotated by the weight of the monitor 13 and the click convex portion 4 b is stored. The positioning concave portion 2c moves, and the sliding friction convex portion 4c moves in the cutout portion 2e. Thereafter, the click convex portion 4b slides on the tapered surface 2d, and the rotational speed of the monitor 13 begins to decelerate due to the holding torque generated by the friction.

図３（ｂ）及び図４（ｂ）に示すように、摺動摩擦用凸部４ｃが切り欠き部２ｅのエッジに形成されたテーパ２ｆまで移動すると、摺動摩擦用凸部４ｃがテーパ２ｆに当接して保持トルクが発生するため、クリック用凸部４ｂで発生した保持トルクと、摺動摩擦用凸部４ｃにより発生した保持トルクにより、モニタ１３の自重落下が止まる。このため、モニタ１３は、ヒンジ機構１の保持トルクによって自重落下位置に保持される。このとき、切り欠き部２ｅのエッジをテーパ２ｆとすることにより、モニタ１３の自重落下による摺動摩擦用凸部４ｃと切り欠き部２ｅのエッジの急激な衝突の結果起こるモニタ１３のバウンドを抑制し、さらに、板バネ４の回動を滑らかに止めることができる。なお、モニタ１３の自重落下位置とは、図８Ｂに一点鎖線で示す状態の位置である。この自重落下位置に合わせて切り欠き部２ｅの周方向の幅を決定し、モニタ１３の開閉角度のうち、任意の角度範囲にのみ摺動摩擦用凸部４ｃによる保持トルクを発生させることができる。
自重落下位置で止まったモニタ１３がユーザによって押されると、クリック用凸部４ｂはベース２表面をテーパ面２ｄからクリック用凹部２ｂ１へ向かって摺動し、摺動摩擦用凸部４ｃはテーパ２ｆに乗り上がりながら摺動する。As shown in FIGS. 3B and 4B, when the sliding friction convex portion 4c moves to the taper 2f formed at the edge of the notch 2e, the sliding friction convex portion 4c contacts the taper 2f. Since the holding torque is generated in contact therewith, the weight drop of the monitor 13 is stopped by the holding torque generated by the click convex portion 4b and the holding torque generated by the sliding friction convex portion 4c. For this reason, the monitor 13 is held at its own weight drop position by the holding torque of the hinge mechanism 1. At this time, by making the edge of the notch portion 2e a taper 2f, the bounce of the monitor 13 caused as a result of a sudden collision between the sliding friction convex portion 4c and the edge of the notch portion 2e due to the weight drop of the monitor 13 is suppressed. Furthermore, the rotation of the leaf spring 4 can be stopped smoothly. In addition, the own weight fall position of the monitor 13 is a position of the state shown by the dashed-dotted line in FIG. 8B. The width in the circumferential direction of the notch 2e can be determined in accordance with the self-weight fall position, and the holding torque by the sliding friction convex portion 4c can be generated only in an arbitrary angle range of the opening / closing angle of the monitor 13.
When the monitor 13 stopped at its own weight falling position is pushed by the user, the click convex portion 4b slides on the surface of the base 2 from the tapered surface 2d toward the click concave portion 2b1, and the sliding friction convex portion 4c becomes the taper 2f. Slide while climbing.

クリック用凸部４ｂが、図３（ｂ）に示す位置からベース２表面を摺動してクリック用凹部２ｂ２へ向かって摺動するとき、反対側の摺動摩擦用凸部４ｃも図４（ｃ）に示すようにプレート５に形成された絞り凹部５ｂに入り込んだ状態に撓んでベース２表面を摺動するので、板バネ４の両端で保持トルクが発生する。このように板バネ４両端に保持トルクが発生するため、ヒンジ機構１は、従来のヒンジ機構にあった複数の摩擦部材（バネワッシャ等）を必要とせずに保持トルクが得られ、部品点数を削減できる。また、ヒンジ機構１は、摩擦部材を用いない構成のため、摩擦部材の板厚及び摩擦のばらつきの影響がない、保持トルクの安定した機構にできる。   When the click convex portion 4b slides on the surface of the base 2 from the position shown in FIG. 3B and slides toward the click concave portion 2b2, the sliding friction convex portion 4c on the opposite side is also shown in FIG. ) And the base 2 is slid on the surface of the base 2 by bending into the constriction recess 5b formed in the plate 5, so that a holding torque is generated at both ends of the leaf spring 4. Since the holding torque is generated at both ends of the leaf spring 4 in this way, the hinge mechanism 1 can obtain the holding torque without the need for a plurality of friction members (spring washers, etc.) as in the conventional hinge mechanism and reduce the number of parts. it can. Further, since the hinge mechanism 1 does not use a friction member, the hinge mechanism 1 can be a mechanism having a stable holding torque without being affected by variations in the plate thickness and friction of the friction member.

図３（ｃ）及び図４（ｃ）に示すように、クリック用凸部４ｂがクリック用凹部２ｂ２に嵌まり込むことによりモニタ１３がこの角度位置で保持される。なお、クリック用凸部４ｂがクリック用凹部２ｂ１，２ｂ２に嵌まり込んだ状態のときの角度位置がモニタ画面１３ａの視聴位置であり、この視聴位置とは図８Ｃに示す状態の位置である。
このとき、板バネ４はクリック用凸部４ｂの嵌合の他に、摺動摩擦用凸部４ｃに保持トルクが発生しているため、クリック用凸部４ｂを支点として回転シャフト３が回転軸穴２ａの嵌合ガタ分振れることがなく、嵌合ガタを効率的に押さえ込むことができる。このため、摺動摩擦用凸部４ｃのベース２への押し付け力は最小限にすることができる。
また、板バネ４に、クリック作用のためのクリック用凸部４ｂと、摺動摩擦用の摺動摩擦用凸部４ｃとを設けたので、クリック作用力と開閉操作力との相対ばらつきも少ない。As shown in FIGS. 3C and 4C, the click projection 4b fits into the click recess 2b2, whereby the monitor 13 is held at this angular position. The angular position when the click convex portion 4b is fitted in the click concave portions 2b1 and 2b2 is the viewing position of the monitor screen 13a, and this viewing position is the position shown in FIG. 8C.
At this time, since the leaf spring 4 generates a holding torque in the sliding friction convex portion 4c in addition to the fitting of the click convex portion 4b, the rotary shaft 3 is rotated around the rotation shaft hole with the click convex portion 4b as a fulcrum. It is possible to efficiently hold down the fitting backlash without being shaken by the fitting backlash of 2a. For this reason, the pressing force to the base 2 of the sliding friction convex part 4c can be minimized.
Further, since the leaf spring 4 is provided with the click convex portion 4b for the click action and the sliding friction convex portion 4c for the sliding friction, there is little relative variation between the click acting force and the opening / closing operation force.

以上より、実施の形態１によれば、ヒンジ機構１は、モニタ１３に連結されて回転中心軸Ｘとなる回転シャフト３と、回転シャフト３を回転自在に軸支すると共に、回転中心軸Ｘを中心とした円周上にクリック用凹部２ｂ１，２ｂ２及び収納位置決め用凹部２ｃを有するベース２と、回転シャフト３の端部に取り付けて一体で回転するプレート５と、ベース２とプレート５との間に位置して回転シャフト３に嵌合して一体で回転し、ベース２に設けられたクリック用凹部２ｂ１，２ｂ２及び収納位置決め用凹部２ｃに嵌まり込んでモニタ１３を所定の回転角度位置に保持するクリック用凸部４ｂを有する板バネ４とを備え、この板バネ４には、クリック用凸部４ｂとは回転中心軸Ｘを介して反対側に、ベース２に圧接して摺動する摺動摩擦用凸部４ｃを設けるように構成した。このため、振動時における回転シャフト３の振れを防止することができる。また、効率的に回転シャフト３の嵌合ガタを防止できるので、摺動摩擦用凸部４ｃのベース２押し付け力を最小限とすることができる。
また、摺動摩擦用凸部４ｃを設けることにより、従来のような摩擦用部材及び弾性部材を必要とせずに保持トルクが得られるため、部品点数が少ないヒンジ構成が実現できるばかりでなく、摩擦部材の板厚及び摩擦のばらつきの影響がない、保持トルクの安定したヒンジ機構１となる。
また、板バネ４にクリック用凸部４ｂと摺動摩擦用凸部４ｃとを設けたので、クリック作用力と開閉操作力との相対ばらつきも少ない。As described above, according to the first embodiment, the hinge mechanism 1 is connected to the monitor 13 and serves as the rotation center axis X, and the rotation shaft 3 is rotatably supported and the rotation center axis X is supported. Between the base 2 having the click recesses 2b1 and 2b2 and the storage positioning recess 2c on the center circumference, the plate 5 attached to the end of the rotary shaft 3 and rotating integrally, and between the base 2 and the plate 5 The monitor 13 is held at a predetermined rotation angle position by being fitted to the rotary shaft 3 and rotating integrally and fitted into the click recesses 2b1 and 2b2 and the storage positioning recess 2c provided in the base 2. And a leaf spring 4 having a click projection 4b. The leaf spring 4 slides in pressure contact with the base 2 on the opposite side of the click projection 4b with respect to the rotation center axis X. For dynamic friction The section 4c is constructed so as to provide. For this reason, the shake of the rotating shaft 3 at the time of vibration can be prevented. Further, since the backlash of the rotating shaft 3 can be prevented efficiently, the base 2 pressing force of the sliding friction convex portion 4c can be minimized.
Further, by providing the sliding friction convex portion 4c, a holding torque can be obtained without requiring a friction member and an elastic member as in the prior art, so that not only a hinge configuration with a small number of parts can be realized, but also the friction member Thus, the hinge mechanism 1 having a stable holding torque is obtained without being affected by variations in the plate thickness and friction.
Moreover, since the click convex part 4b and the sliding friction convex part 4c are provided on the leaf spring 4, there is little relative variation between the click action force and the opening / closing operation force.

また、実施の形態１によれば、ベース２の、板バネ４の摺動摩擦用凸部４ｃが摺動する面の一部に切り欠き部２ｅを設けるように構成した。このため、ヒンジ機構１の組立時に、板バネ４とベース２を、摺動摩擦用凸部４ｃを切り欠き部２ｅに入り込ませるように重ねた状態にすることにより、板バネ４を撓ますことなく組立てが可能となり、組立性が向上する。
また、切り欠き部２ｅの大きさを調整して、ベース２の、収納位置にあるモニタ１３が自重により自重落下位置まで回動する範囲に、板バネ４の摺動摩擦用凸部４ｃが作用しない切り欠き部２ｅを設けるように構成した。このため、モニタ１３の開閉時に、所定の角度範囲（即ち収納位置から自重落下位置まで）で板バネ４の摺動摩擦用凸部４ｃをベース２の切り欠き部２ｅに入らせてベース２表面を摺動させないことにより、開閉操作で必要な角度範囲のみ保持トルクを発生させることができる。Further, according to the first embodiment, the notch portion 2e is provided on a part of the surface of the base 2 on which the sliding friction convex portion 4c of the leaf spring 4 slides. Therefore, when the hinge mechanism 1 is assembled, the leaf spring 4 and the base 2 are overlapped so that the sliding friction convex portion 4c enters the cutout portion 2e, so that the leaf spring 4 is not bent. Assembling becomes possible, and assemblability is improved.
Further, the sliding friction convex portion 4c of the leaf spring 4 does not act in a range in which the size of the notch portion 2e is adjusted so that the monitor 13 in the storage position of the base 2 is rotated to its own weight fall position by its own weight. The notch portion 2e is provided. For this reason, when the monitor 13 is opened and closed, the sliding friction convex portion 4c of the leaf spring 4 is caused to enter the notch portion 2e of the base 2 within a predetermined angle range (ie, from the storage position to the self-weight falling position) so that the surface of the base 2 is covered. By not sliding, the holding torque can be generated only in the angle range necessary for the opening / closing operation.

また、実施の形態１によれば、ベース２の切り欠き部２ｅの、板バネ４の摺動摩擦用凸部４ｃに当接するエッジにテーパ２ｆを形成するように構成した。このため、摺動摩擦用凸部４ｃが切り欠き部２ｅのエッジに急激に衝突することを抑制することができ、さらに、滑らかに保持トルクを発生させることができる。   Further, according to the first embodiment, the taper 2f is formed on the edge of the notch 2e of the base 2 that contacts the sliding friction convex portion 4c of the leaf spring 4. For this reason, it can suppress that the convex part 4c for sliding friction collides rapidly with the edge of the notch part 2e, and also can generate | occur | produce a holding torque smoothly.

なお、上記実施の形態１では、切り欠き部２ｅをベース２の縁を切り欠いて形成する構成としたが、これに限定されるものではなく、切り欠き部２ｅを半抜き加工又は絞り加工により形成してもよい。図５は、実施の形態１のその他の構成のヒンジ機構１を図３（ａ）のＡＡ線に相当する位置で切断した断面図を示し、図５（ａ）は半抜きで形成した切り欠き部２ｅ１、図５（ｂ）は絞りで形成した切り欠き部２ｅ２を示す。図５（ａ），（ｂ）に示す切り欠き部２ｅ１，２ｅ２の構成の場合、上記実施の形態１の切り欠き部２ｅと同様の効果に加えて、ベース２を完全に切り欠かないのでベース２の強度を確保しながら保持トルクの制御を行うことができる。   In the first embodiment, the notch 2e is formed by cutting the edge of the base 2. However, the present invention is not limited to this, and the notch 2e is formed by half-cutting or drawing. It may be formed. FIG. 5 shows a cross-sectional view of the hinge mechanism 1 of the other configuration of the first embodiment cut at a position corresponding to the line AA in FIG. 3A, and FIG. 5A is a cutout formed by half-cutting. Part 2e1, FIG. 5 (b) shows a notch 2e2 formed by a diaphragm. In the case of the configuration of the notches 2e1 and 2e2 shown in FIGS. 5A and 5B, in addition to the same effect as the notch 2e of the first embodiment, the base 2 is not completely notched. The holding torque can be controlled while securing the strength of 2.

また、図示例では、回転中心軸Ｘを中心としたベース２の円周上にクリック用凹部２ｂ１，２ｂ２、収納位置決め用凹部２ｃを設け、板バネ４にこれら各凹部２ｂ１，２ｂ２，２ｃに嵌まり込むクリック用凸部４ｂを設けた構成であるが、上記とは反対に、ベース２にクリック用凸部を、板バネ４に各凹部を設けても同一の作用効果が得られる。また、上記ではプレート５を回転シャフト３の端部にかしめ固着したが、ねじ止め、接着等によって固着してもよい。   Further, in the illustrated example, click recesses 2b1, 2b2 and storage positioning recess 2c are provided on the circumference of the base 2 around the rotation center axis X, and the leaf spring 4 is fitted into the recesses 2b1, 2b2, 2c. Although it is the structure which provided the convex part 4b for a click to be stuck, even if it provides the convex part for a click in the base 2 and each recessed part in the leaf | plate spring 4 contrary to the above, the same effect is obtained. In the above description, the plate 5 is caulked and fixed to the end of the rotary shaft 3, but may be fixed by screwing, bonding or the like.

また、上記実施の形態１では、手動開閉式の天吊りモニタ装置１１にヒンジ機構１を用いる構成としたが、これに限定されるものではなく、モータを用いた電動式の天吊りモニタ装置に用いる構成であってもよい。この構成の場合には、摺動摩擦用凸部４ｃがベース２表面を摺動する際に保持トルクが発生するため、減速機構のバックラッシュ等から発生するガタを抑えることができ、モニタ１３の振れを防止することができる。また、天吊りモニタ装置で最も駆動トルクが必要な、モニタ１３を自重落下位置から収納位置へ閉じるときには、摺動摩擦用凸部４ｃが切り欠き部２ｅに入ることにより保持トルクが発生しないので、モータの出力はモニタ１３の自重相当で足りる。   In the first embodiment, the hinge mechanism 1 is used for the manually openable / closable ceiling monitor 11. However, the present invention is not limited to this, and an electric ceiling monitor using a motor is used. The structure to be used may be used. In the case of this configuration, a holding torque is generated when the sliding friction convex portion 4c slides on the surface of the base 2, so that it is possible to suppress the backlash generated by the backlash of the speed reduction mechanism and the like. Can be prevented. Further, when the monitor 13 that requires the most driving torque in the ceiling-mounted monitor device is closed from its own weight drop position to the storage position, since the sliding friction convex portion 4c enters the notch portion 2e, no holding torque is generated. Is equivalent to the weight of the monitor 13.

以上のように、この発明に係るヒンジ機構は、振動時に回転体の振れを防止することができるので、天吊りモニタ装置のモニタ開閉のためのヒンジとして用いるのに適している。   As described above, the hinge mechanism according to the present invention is suitable for use as a hinge for opening and closing the monitor of the ceiling monitor device because it can prevent the rotating body from shaking during vibration.

Claims (4)

回転体に連結され、回転軸となるシャフトと、
前記シャフトを回転自在に軸支すると共に、前記回転軸を中心とした円周上にクリック用凹凸部の一方を有するベースと、
前記シャフトの端部に取り付けて一体で回転するプレートと、
前記ベースと前記プレートとの間に位置して前記シャフトに嵌合して一体で回転し、前記ベースに設けられた前記クリック用凹凸部の一方に係合して前記回転体を所定の回転角度位置に保持するクリック用凹凸部の他方を有する板バネとを備え、
前記板バネは、前記クリック用凹凸部の他方とは前記回転軸を介して反対側に、前記クリック用凹凸部の他方と連動して前記ベースに圧接して摺動する摺動摩擦用凸部を有することを特徴とするヒンジ機構。 A shaft connected to a rotating body and serving as a rotating shaft;
A base that rotatably supports the shaft and has one of the click irregularities on the circumference around the rotation axis;
A plate that attaches to the end of the shaft and rotates integrally;
It is located between the base and the plate, is fitted to the shaft and rotates integrally, and engages with one of the click irregularities provided on the base to rotate the rotating body at a predetermined rotation angle. A leaf spring having the other of the click irregularities held in position,
The leaf spring has a sliding friction convex portion that slides in pressure contact with the base in conjunction with the other of the click uneven portion on the opposite side to the other of the click uneven portion. A hinge mechanism characterized by comprising: ベースは、所定位置にある回転体が自重により回動する範囲に、板バネの摺動摩擦用凸部が作用しない切り欠き部を有することを特徴とする請求項１記載のヒンジ機構。   2. The hinge mechanism according to claim 1, wherein the base has a notch portion in which the sliding friction convex portion of the leaf spring does not act in a range in which the rotating body at a predetermined position rotates by its own weight. ベースの切り欠き部は、板バネの摺動摩擦用凸部に当接するエッジがテーパ状であることを特徴とする請求項２記載のヒンジ機構。   The hinge mechanism according to claim 2, wherein the notch portion of the base has a tapered edge that contacts the convex portion for sliding friction of the leaf spring. ベースの切り欠き部は、半抜き加工又は絞り加工により形成することを特徴とする請求項２記載のヒンジ機構。   The hinge mechanism according to claim 2, wherein the notch portion of the base is formed by half punching or drawing.
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